Speaker box



FIG. 1 is a rear, side, bottom perspective view of a speaker box showing the new design;

FIG. 2 is a front, side, top perspective view thereof;

FIG. 3 is a side elevation thereof, the other side being a mirror image thereof;

FIG. 4 is a bottom plan view thereof; and,

FIG. 5 is a top plan view thereof. 

CLAIM The ornamental design for a speaker box, as shown and described. 